On 23.04.2013 14:40, Torstein Hegge wrote: > On Mon, Apr 22, 2013 at 23:45:49 +0200, Daniel Mack wrote: >> On 22.04.2013 21:23, Torstein Hegge wrote: >>> Even if this is against the specification, devices that does this is out >>> there. I have seen the same thing on a Sennheiser BTD-500, but that only >>> supports one frequency, so I didn't hit this problem. >> >> Yes, if that's the case, we should patch both lsusb and the snd-usb >> driver. Let's see who provides a patch first :) > > I think the lsusb patch should look something like this. Unless you have > objections, I'll try to poke Greg KH via the linux-usb mailing list. Looks good to me, but I can't test it. You can also send Greg pull requests on GitHub, he'll pick them from there. https://github.com/gregkh/usbutils Best, Daniel > > -- >8 -- > Subject: [PATCH] lsusb: Parse misplaced UAC1 AudioControl Endpoint Descriptor > > Some UAC devices (Sennheiser BTD-500 and some firmware revisions of > Plantronics USB headsets) has the class specific endpoint descriptor in > front of the standard endpoint descriptor. Print the "AudioControl > Endpoint Descriptor" where it appears, instead of showing > "UNRECOGNIZED". > --- > lsusb.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/lsusb.c b/lsusb.c > index 5118114..470146c 100644 > --- a/lsusb.c > +++ b/lsusb.c > @@ -586,6 +586,22 @@ static void dump_altsetting(libusb_device_handle *dev, const struct libusb_inter > goto dump; > } > break; > + case LIBUSB_CLASS_AUDIO: > + switch (buf[1]) { > + /* MISPLACED DESCRIPTOR */ > + case USB_DT_CS_ENDPOINT: > + switch (interface->bInterfaceSubClass) { > + case 2: > + dump_audiostreaming_endpoint(buf, interface->bInterfaceProtocol); > + break; > + default: > + goto dump; > + } > + break; > + default: > + goto dump; > + } > + break; > default: > /* ... not everything is class-specific */ > switch (buf[1]) { > ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
